Proposed JSON communication, some structure in controller, changed handler to received a raw JSON

Author: bottydim

application/__init__.py

@@ -44,7 +44,7 @@ def inject_profiler():
 # Enable jinja2 loop controls extension
 app.jinja_env.add_extension('jinja2.ext.loopcontrols')
 
-# Pull in URL dispatch routes
+# Pull in URL dispatch routes - here all blueprints are registered
 app.register_blueprint(home)
 # app.register_blueprint(external_api)
 app.register_blueprint(handler)

application/controller/controller.py

@@ -12,14 +12,30 @@
 from application import app
 
 from servers import police
-
-def main():
+#takes python object representation fo the received JSON object
+def main(data):
+	location = data["location"]
+	if location:
+		processLocation(location)
+	features = data["features"]
+	if features:
+		processFeatures(features)
 	#test response will be the response from
 	#the module taking care of a communication 
 	#with some external API
 	#we parse that response with the PARSER
 	#and return it to the request handler
 	test_response = police.getCategories()
+
 	temp = test_response.read()
 
-	return temp
+	return temp
+def processLocation(location):
+	#TODO
+	return 
+#takes array fo features
+def processFeatures(features):
+	for feature in features:
+		#TODO
+		print feature['name']
+

application/request_handler/handler.py

@@ -27,12 +27,23 @@
 calls the controller method which returns the JSON object which the client expect,
 and then finally, send the result(the json) back to the client
 '''
+'''
+body of the request has to contain JSON object with the following schema:
+{ "location" : "Some location name or null",
+  "features" : [{"name" : "feature_name","args" : {"arg_name":"value"}}
+]
+ }
+'''
+
 @handler.route('/app/', methods=['POST'])
 def handleReq():
 	#extract the data sent from the client
 	#the POST request's body should contain a key-value pair and the name of the key is 'data'
-	input_data = request.form['data']
-	result = controller.main()
+	print "inside POST request handler"
+	input_data = request.data
+	print "data received ",input_data
+	input_data = json.loads(input_data)	
+	result = controller.main(input_data)
  	return result
 
 

example_request.json

@@ -0,0 +1,5 @@
+{ "location" : "Some location name or null",
+  "features" : [{"name" : "feature_name","args" : {"arg_name":"value"}},
+                {"name" : "new_name","args" : {"arg_name":"value"}}
+]
+ }

geoJSONproposed.json

@@ -0,0 +1,36 @@
+  { "type": "FeatureCollection",
+    "features": [
+      { "type": "Feature",
+        "geometry": {"type": "Point", "coordinates": [102.0, 0.5]},
+        "properties": {
+          "name": "value0",
+          "value": 0.0
+          }
+        },
+      { "type": "Feature",
+        "geometry": {
+          "type": "LineString",
+          "coordinates": [
+            [102.0, 0.0], [103.0, 1.0], [104.0, 0.0], [105.0, 1.0]
+            ]
+          },
+        "properties": {
+          "name": "value0",
+          "value": 0.0
+          }
+        },
+      { "type": "Feature",
+         "geometry": {
+           "type": "Polygon",
+           "coordinates": [
+             [ [100.0, 0.0], [101.0, 0.0], [101.0, 1.0],
+               [100.0, 1.0], [100.0, 0.0] ]
+             ]
+         },
+    "properties": {
+          "geometry": {"type": "Point", "coordinates": [102.0, 0.5]}          
+          }
+         }
+       ],
+      ""
+     }